Loom-harness operating mechanism



May 30, 1933. GILMORE 1,911,822

LOOM HARNESS OPERATING MECHANISM Filed April 20, 1932 2 Sheets-Sheet lINVENTOR E.E. G 0112201349 BY Q @3332;

ATTORNEY y 1933- E. E. GILMORE 1,911,822

LOOM HARNESS OPERATING MECHANISM Filed April 20, 1932 2 Sheets-Sheet 2INVENTOR Patented May 3-9, 1933 ATENT osmos- EVERETT E. GILMORE, FSTOCKTON, CALIFORNIA LOOM-HARNESS OPERATING IfIFiCHANISM Applicationfiled Apri1 20,

This invention relates to looms and particularly to one of a portablemanually operated type such as are usedin homes for weaving mats,draperies etc. The invention also particularly relates to the mechanismfor operating the harness of the loom.

' In all looms of this type which are now made, as far as I am aware thevertically moving harness frames are actuated from m above and theconnections between the actuating means and the control treadles beloware frequently in the way of and are apt to chafe some of thethreadsbeing woven. Also such looms on account of this feature ofconstruction alone are somewhat complicated excessively high and heavy,and are thus hardly suitable for home use.

The principal object of my inventionis to avoid the above objectionablefeature by arranging the harness operating mechanism in such a mannerthat it is entirely disposed below the'harness, so that there is nointerference with the threads of the article being Woven at any time andthe height of the loom is kept down to a minimum. Also my improvedmechanism, while very effective, is simple and light and easy tomanipulate, besides being of a very inexpensive nature.

These objects I accomplish by means of '30 such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claims.

In the drawings similar characters of reference indicate correspondingparts in the several views:

Fig. 1 is a longitudinal section of a loom with certain parts removedand looking toward the front.

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

Fig. 3 is a fragmentary transverse section on the line 33 of Fig. 1. p

Referring now more particularly to the characters of reference on thedrawings, the

frame of the loom comprises corner posts 1 connected by verticallyspaced beams 2.

A bar 3 connects the front posts at the bottom; the corresponding pairsof posts supporting the cloth brace and warp beam (not shown) in theusual manner, while the har- 1932. Serial No. 606,371.-

ness frames 4 are mounted in connection with the upper beams 2 betweenthe posts.

The ends of the harness frames of which there may be any desired numberslidably project into vertical grooves 5 formed in somewhat closelyspaced relation in uprights 6 secured to andupstanding from said upperbeams 2. Horizontal bars 7 extend between and are secured against theopposite sides of the uprights adjacent the plane of the lowermostposition of the harness.

Normally disposed between the bars 7 in transverse alinement with theharness frames are jacks 8 arranged inlongitudinally opposed pairs,there being one pair'for each such frame, The jacks of each set areturnable independently of each other on a common pivot pin 9 supportedby the bars 7 with spacer disks 10 about the pin between the jacks tohold the same, in properly' separated relationship. The opposite ends ofthe acks extend to adjacent the uprights 6 and the ends of the harnessframes, and are formed with rounded noses 11 on top which engage theunderside of the corresponding harness frames.

At said ends'the jacks are normally supported on rests 12 secured to thebars 7, thus also limiting the downward movement of the harness frameswhichjare supported by the jacks." When the harness and jacks are thusdisposed the jacks are horizontal and are. completely concealed betweenthe bars 7. V

The jacks at their adjacent ends nearly meet each other and have hooks.depending therefrom. Chain loops 14 depend from the hooks of thecorresponding pairs of; jacks and pass through eyes 15 secured on andupstanding from the upper edges of the. individual lams 16.' There areas many lams as there are harness frames and they are disposed inalternating relation in transverse alinement with the jacks and ban 95ness. Alternate ones of the lams are pivoted in common in connectionwiththe lower ends of theuprightsfi as shown at 17 V Hinged on the bar 8 andextending rearwardlytherefrom are treadles 18 of suitable 100 designthere being as many treadles as there are lams. The treadles all extendunder the lams and each one is detachably connected to any desired pairOLE lams by flexible elements such as cords l9, and the treadles are ofcourse normally disposed with an upward slant toward their free end sothat they can be depressed by the feet a certain distance. The lams aresomewhat thin and light, and to prevent their free ends engaginrragainst adjacent lams when they are de-' pressed and are angularlydisposed, I provide separating fingers 20 which depend from a block 21supported between the bars 7 above the jacks in the plane of their adjaeent ends.

In operation therefore it will be seen that when any treadle isdepressed whatever pair of lams is connected thereto will be depressedlikewise pulling down on the adjacent ends of the corresponding pairs ofjacks. The opposite ends of the jacks will be lifted, raising thecorresponding harness frames at both ends simultaneously so that suchraising takes place evenly and without any bending of the frames intheir grooves. As said ends of the jacks are raised they move away fromthe bars 7 and I therefore provide guides 22 secured to the uprights 6and which are designed to retain saidjack ends enclosed in all positionsof the same.

v The cords 19 are provided with adjustable slip-knots 190; so thatadjustment in their length may be made to compensate for the differencein distance from the pins 9 to the points of attachment of the differentcords with the lams, and for the difference in distance from the treadlehinges to the points of attachment of the cords with the treadles. Inthis manner, both the lams connected to any one treadle will bedepressed the same distance with a depression of the correspondingtreadle. 1

"From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfills the objects of theinvention as set forth herein.

lVhile this specification sets forth in detail the present and preferredconstruction of the device, still in practice such'deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claims.

Having thus described my invention what I claim as new and useful anddesire to secure by Letters Patent is: i

1. In a'loom, a plurality of transversely spaced harness frames, jackleversfor the different frames under and engaging the lower edges of thesame, pivotally mounted lams under and individually connected to thelevers, treadles under the lams and equal in number to the number offrames, and

flexible pull connections beween each treadle and a predetermined pairof the lams.

In a loom, a plurality of transversely spaced harness frames, pairs ofjack levers for the different frames under and engaging the lower edgesof the same, treadles extending transversely of and under the levers andframes spaced apart lengthwise thereof, pivotally mounted lams disposedbetween the levers and treadles and extending lengthwise of the levers,the lams being the same in number as the harness frames, a connectionbetween each lam and the corresponding pair of levers, and a flexiblepull element interchangeably connected to each treadle and predeterminedpair of the lams.

In a loom, a plurality of transversely spacedharness frames, jack leversfor the difierent frames under and engaging the lower edges of the same,treadles extending transversely of and under the levers and frames andspaced apart lengthwise thereof, pivotally mounted lams to the samenumber as the haruess'fraines disposed between the levers and treadlesand extending lengthwise of the former, connections'between the lams andthe corresponding levers, the lams overlapping each other so that eachlam overlies all the treadles, and' flexible pull elements connectingthe treadles and predetermined pairs of lams. v i

4. A structure as in claim 3, with spacer elements depending between thelams at their overlapping portions.

In a loom, a harness frame, a pair of jack levers for said frame underand engaging the lower edge of the same, a pivoted lam under one leverand projecting beyond the adjacent end of the other lever, connectionmeans between said lam and both levers, a treadle under the lam, and apull connection between said treadle and the lam.

In testimony whereof I affix my signature.

EVERETT E. GILMORE.

